Stand-on mower

Abstract

A stand-on mower includes a foot pedal for a user to stand on; a walking assembly including at least two drive wheels and at least two walking electric motors, where the at least two walking electric motors drive the at least two drive wheels one to one; and a power supply configured to power at least the walking assembly to enable the at least two drive wheels to output torque to drive the stand-on mower to walk and further configured to power at least a cutting assembly to enable a mowing element to cut vegetation. The ratio of maximum output torque of a single drive wheel to an unladen weight of the stand-on mower is greater than or equal to 1.2 N·m/kg.

What is claimed is: 
     
         1 . A stand-on mower, comprising:
 a body portion comprising a frame;   a foot pedal used for a user to stand on and disposed at a rear end of the body portion;   a walking assembly, supporting the body portion and configured to drive the stand-on mower to walk, comprising at least two drive wheels and at least two walking electric motors each driving a respective one of the at least two drive wheels;   a cutting assembly comprising a mowing element for mowing grass and mounted to the frame; and   a power supply configured to power the walking assembly to enable the at least two drive wheels to output torque to drive the stand-on mower to walk and further configured to power the cutting assembly to enable the mowing element to cut vegetation;   wherein a ratio of maximum output torque of a single drive wheel of the at least two drive wheels to an unladen weight of the stand-on mower is greater than or equal to 1.2 N·m/kg.   
     
     
         2 . The stand-on mower according to  claim 1 , wherein the at least two drive wheels comprise a left drive wheel and a right drive wheel, and the left drive wheel and the right drive wheel are driven by a first walking electric motor and a second walking electric motor, respectively. 
     
     
         3 . The stand-on mower according to  claim 2 , further comprising a transmission assembly configured to convert or transmit torque of the at least two walking electric motors to the at least two drive wheels. 
     
     
         4 . The stand-on mower according to  claim 1 , wherein a ratio of rated output power of the walking assembly to the unladen weight of the stand-on mower is greater than or equal to 7 W/kg. 
     
     
         5 . The stand-on mower according to  claim 1 , wherein a ratio of maximum output power of the single drive wheel to the unladen weight of the stand-on mower is greater than or equal to 8.7 W/kg. 
     
     
         6 . The stand-on mower according to  claim 1 , wherein the power supply comprises a plurality of battery packs, and at least one of the plurality of battery packs is detachably mounted to a coupling portion of the stand-on mower. 
     
     
         7 . The stand-on mower according to  claim 6 , wherein the unladen weight of the stand-on mower is defined as an overall weight of the stand-on mower when all battery packs accommodable in the coupling portion of the stand-on mower are mounted and the user is not carried. 
     
     
         8 . The stand-on mower according to  claim 1 , wherein the walking assembly comprises rear walking wheels and front walking wheels, the rear walking wheels comprise the at least two drive wheels, the at least two drive wheels rotate around a rear axis, the front walking wheels rotate around a front axis, and a distance between the front axis and the rear axis is a wheelbase of the stand-on mower. 
     
     
         9 . The stand-on mower according to  claim 8 , wherein, when the stand-on mower is unloaded, a ratio of a distance between an overall center of gravity M of the stand-on mower and the rear axis to the wheelbase of the stand-on mower is greater than or equal to 0.25 and less than or equal to 0.35. 
     
     
         10 . The stand-on mower according to  claim 8 , wherein, when the stand-on mower is in a manned state, a ratio of a distance between an overall center of gravity M of the stand-on mower and the rear axis to the wheelbase of the stand-on mower is greater than or equal to 0.2 and less than or equal to 0.3. 
     
     
         11 . The stand-on mower according to  claim 8 , wherein, when the stand-on mower is in a manned state, a weight distribution of the front walking wheels accounts for 24% to 27% of an overall weight of the stand-on mower. 
     
     
         12 . The stand-on mower according to  claim 8 , wherein, when the stand-on mower is in a manned state, a weight distribution of the front walking wheels accounts for 20% to 30% of an overall weight of the stand-on mower. 
     
     
         13 . The stand-on mower according to  claim 8 , wherein output torque of the single drive wheel is greater than 366 N·m. 
     
     
         14 . The stand-on mower according to  claim 1 , wherein specifications of the at least two drive wheels comprise 23×10.5-12. 
     
     
         15 . The stand-on mower according to  claim 1 , wherein, when the stand-on mower is on a slope inclined at an angle of 20° or less, a straight travel capability of the stand-on mower in a slope width direction reaches a deviation of 3 meters or less within 50 meters. 
     
     
         16 . A stand-on mower, comprising:
 a body portion comprising a frame;   a foot pedal used for a user to stand on and disposed at a rear end of the body portion;   a walking assembly supporting the body portion and configured to drive the stand-on mower to walk, the walking assembly comprising at least two drive wheels and at least two walking electric motors each driving a respective one of the at least two drive wheels;   a cutting assembly comprising a mowing element for mowing grass and mounted to the frame; and   a power supply configured to power at least the walking assembly to enable the at least two drive wheels to output torque to drive the stand-on mower to walk and further configured to power at least the cutting assembly to enable the mowing element to cut vegetation;   wherein, when the stand-on mower is on a slope inclined at an angle of 20° or less, a straight travel capability of the stand-on mower in a slope width direction reaches a deviation of 3 meters or less within 50 meters.   
     
     
         17 . A stand-on mower, comprising:
 a body portion comprising a frame;   a foot pedal used for a user to stand on and disposed at a rear end of the body portion;   a walking assembly supporting the body portion and configured to drive the stand-on mower to walk, the walking assembly comprising at least two drive wheels and at least two walking electric motors each driving a respective one of the at least two drive wheels;   a cutting assembly comprising a mowing element for mowing grass and mounted to the frame; and   a power supply configured to power the walking assembly and the cutting assembly;   wherein a ratio of rated output power of the at least two drive wheels to an unladen weight of the stand-on mower is greater than or equal to 7 W/kg.   
     
     
         18 . The stand-on mower according to  claim 17 , further comprising a transmission assembly configured to convert or transmit torque of the at least two walking electric motors to the at least two drive wheels. 
     
     
         19 . The stand-on mower according to  claim 17 , wherein, when the stand-on mower is on a slope inclined at an angle of 20° or less, a straight travel capability of the stand-on mower in a slope width direction reaches a deviation of 3 meters or less within 50 meters. 
     
     
         20 . The stand-on mower according to  claim 17 , wherein a ratio of maximum output power of a single drive wheel of the at least two drive wheels to the unladen weight of the stand-on mower is greater than or equal to 8.7 W/kg.